Preservative blends containing quaternary ammonium compounds

Drug – bio-affecting and body treating compositions – Designated organic active ingredient containing – Having -c- – wherein x is chalcogen – bonded directly to...

Reexamination Certificate

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Details

C514S568000, C514S570000

Reexamination Certificate

active

10087207

ABSTRACT:
The present invention provides a biocidal composition comprising a synergistic mixture of certain quaternary ammonium biocides and one or more ketone acids, aromatic carboxylic acids, salts thereof, or mixtures thereof.

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